Investigation of Culicoides (Diptera: Ceratopogonidae) in relation to the transmission of bovine Onchocerca and other filariae in central Kyushu, Japan.
Investigation of Culicoides (Diptera: Ceratopogonidae) in relation to the transmission of bovine Onchocerca and other filariae in central Kyushu, Japan.
复制标题
日本九州中部库蠓科（双翅目：Ceratopogonidae）与牛盘尾丝虫和其他丝虫传播关系的调查。
作者：
H. Takaoka;C. Aoki;O. Bain;K. Ogata;M. Baba
在日本九州发现一例人畜共患盘尾丝虫病病例后，进行了一项调查，以了解该地区的牛盘尾丝虫病种，即在当地Simulium属动物中发展的O. gutturrosa、O. lienalis和O. sp.是否也由库蠓传播。1989年5月至1990年11月在大分和熊本两个牛棚用灯诱法捕获的8种库蠓42582只雌虫中，共有17006只被解剖检查盘尾丝虫感染情况。结果表明，在大分采集到的946株喜鸟种arakawae中，除4株携带短尾虫幼虫外，其余蝇种均未发生丝虫感染。在大分市采集的1只血食性松扎伊绦虫中肠中发现了无鞘微丝蚴，与无鞘微丝蚴和无鞘微丝蚴难以区分。结论库蠓属不会是这3种牛盘尾丝虫的传播媒介。在大分市一个居民区收集到的库蠓表明，可能来自鸟类的Lemdaninae和spldidofilarinae等几种丝虫由arakawae传播。
In Kyushu, Japan, where a human case of zoonotic onchocerciasis was found, a survey was conducted to know if the bovine Onchocerca species of this region, O. gutturosa, O. lienalis and O. sp., which develop in local Simulium spp., were also transmitted by Culicoides. A total of 17,006 out of 42,582 females of eight Culicoides species captured by light-traps from May to November in 1989 and 1990 at two cattle sheds, one in Oita and one in Kumamoto, were dissected and examine for Onchocerca infection. Overall results showed that none of the species had filarial infections except 4 of 946 C. arakawae, an ornithophilic species, collected in Oita which harboured filarial larvae with a short tail, belonging to Lemdaninae. Unsheathed microfilariae indistinguishable from O. lienalis or O. gutturosa were found in the midgut of only one blood-fed C. matsuzawai collected in Oita. It is concluded that Culicoides species would not be vectors of these three bovine Onchocerca species. Additional collections of Culicoides in a residential area of Oita showed that several filarial species, Lemdaninae and Splendidofilarinae, probably from birds, are transmitted by C. arakawae.